Conditional cash transfer programs have become a popular social protection tool in developing countries. They aim to reduce short-term poverty through cash transfers and long-term poverty through enhancing investments in human capital. While numerous evaluations of CCTs show positive short-term...

This paper starts from a review of RCT studies in development economics, and documents many studies largely ignore attrition once attrition rates are found balanced between treatment arms. The paper analyzes the implications of attrition for the internal and external validity of the results of a...

CCT programs have become the anti-poverty program of choice in many developing countries. Numerous evaluations, often based on rigorous experimental designs, leave little doubt that such programs can increase enrollment and grades attained--in the short term. But evidence is notably lacking on...

The effects of early life circumstances on cognitive skill formation are important for later human capital development, labor market outcomes and well-being. In this paper, we test the hypothesis that the first 1,000 days are the critical window for both cognitive skill formation and physical...

The effects of early life circumstances on cognitive skill formation are important for later human capital development, labor market outcomes and well-being. In this paper, we test the hypothesis that the first 1,000 days are the critical window for both cognitive skill formation and physical...

Conditional Cash Transfer (CCT) programs have become the anti-poverty program of choice in many developing countries. Numerous evaluations, often based on rigorous experimental designs, leave little doubt that such programs can increase enrollment and grades attained--in the short term. But...

It is often assumed that early life circumstances, in particular before age two, are important for later human capital development. Using experimental variation in the timing of benefits from a conditional cash transfer program, we test the hypothesis that intervention starting in utero and...

Conditional Cash Transfer (CCT) programs are important anti-poverty programs in Latin America and the Caribbean. There is little evidence, however, of the effectiveness of ongoing CCT programs several years after they have begun. Such evidence is particularly relevant for policymakers because...

This paper starts from a review of RCT studies in development economics, and documents many studies largely ignore attrition once attrition rates are found balanced between treatment arms. The paper analyzes the implications of attrition for the internal and external validity of the results of a...